There are many books about the sun but few try to deal with the implications of the tremendous potential of solar energy as their basic theme; this one does, exclusively, and fails to make the grade. A grouping of topics mostly concerned with the widening variety of uses to which silicon photovoltaic cells can be (or may in time be) put, the text becomes rather shallow as it skips hither and you. It is perhaps at its worst in the page or so devoted to another important aspect of solar energy--photosynthesis. Here the author commits all the traditional errors; the equation to summarize the reaction is the trite CO2 and H2O reaction that has been the scourge of biologists; the drawing to illustrate is captioned as ""the conversion of sunlight into plant life."" Indeed, the drawings are often rather poor conceptually.